n er a do of Ventricular Tac ycar i by Algorithms Enhance Specificity i s Tiered-Therapy Cardloverter-Defibrillator

California; and Division of Cardiology SunriseMedical Center, Las Vegas, Nevada. This study was supported in part by agrant to Dr. Swerdlow from the PM Foundation, Los Angeles, California. Itwas done during the tenure of a Clinician-Scientist Award (88414) to Dr. Chenfrom the American Heart Association, Dallas, Texas.Manuscript received December 13, 1993; revised manuscript receivedFebruary 28,1994, accepted March 11, 1994 .

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